Browse Publications Technical Papers 2007-01-1474

Analysis of Open-Switch Fault Two Level Three Phase Voltage Inverter Behaviour and Automatic Detection and Location Using Zero Harmonic Component 2007-01-1474

The faulty performance of two level three phase voltage inverter is studied under open-switch conditions. This inverter is three phase two level six IGBT voltage source inverter feeding a three phase balanced resistive-inductive load. The inverter three phases currents zero harmonic components are used as diagnostic indices. A knowledge algorithm is based to get information on which IGBT is in open-switch fault condition. This algorithm testing shows that the system could not only detect the open-switch fault, but also identify the faulty switch. Presented simulation results confirm the effectiveness of the proposed methodology.


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